Construction of this mixed-used building being developed by Laraco 376 should be completed in September. Located at 376 Greenwich Ave., the building contacts first-floor retail space, divided retail and office use on the second floor and a large apartment on the third floor topped by a rooftop terrace.

It did not take long for developers of a building on Greenwich Avenue to find three prime tenants for their property: They have leases signed despite the fact that the space won't be move-in ready until September.

Laraco 376 LLC, which bought the site at 376-380 Greenwich Ave. from Omathaun Ltd. in 2012, will welcome Becker Salon and Sivik Global Health Care to the 12,300-square-foot building in September, according to Tom Torelli, a partner in Laraco and managing partner in Allied Property Group in Greenwich.

A lease also has been signed with an undisclosed entity, which plans to open a restaurant on the street level. A 4,000-square-foot apartment will be on the third floor, which will be topped by a rooftop terrace accessible by an elevator.

Constructing a building on Greenwich Avenue has been a challenging project because the work must meet the requirements laid out by the town's historic district.

The footprint of the site allowed for a larger building than the structure that stood there for about 150 years, he said, adding that the arrival of a restaurant will help the lower part of the Avenue's reinvention into a dining mecca.

Because the property, once the home of the Pizza Factory, comes with a liquor license, it added to the attractiveness of the new building, according to a person closely associated with the restaurant.

Greenwich Avenue's cache was also reason for Becker, which has been on Mason Street for eight years, to move its salon, which plans to open on the second floor in October. Becker will share the floor with Sivik, an employee-owned hedge fund sponsor that invests in public equity markets around the globe.

"Mason Street doesn't have as much traffic as on The Avenue," said Becker Chicaiza, owner of the business, who will more than double the size of his current 990-square-foot space where he has 10 employees.

"We'll have more customer service with nails, waxing, eyebrows and makeup. I don't offer those here. I'm hiring more people. I'll double my size" in number of employees, he said.

The move is necessary to meet demand for his services, according to Chicaiza.

"I have a very loyal clientele, but I can't grow any more because my space is too small," he said.

The construction of the building and new tenants' commitment is an indication of the strength of the Greenwich business environment, according to Marcia O'Kane, executive director of the Greenwich Chamber of Commerce.

"Becker Salon will benefit from this change in location. They are becoming popular as a cutting edge salon. It will give them more visibility," she said. "The lower end of the Avenue is definitely attracting more stores. I like that we're seeing more activity. I'm hearing from merchants that the economy is getting better."